Performance in FC-Test
Now we’re going to check the controller in a single-user environment that operates with files rather than sectors.
We stick to our traditional methodology of using FC-Test: we create two logical volumes, 32GB each, on the array and format them in NTFS and then in FAT32. We create a set of files on the first volume, and then this pattern is read from the array, then copied into a folder on the same partition (Copy Near, within one and the same logical volume), and finally copied onto another partition (Copy Far).
The test system is rebooted before each test to avoid the influence of the OS’s caching on the results. We use five file patterns here:
- Install (414 files, 575MB in total)
- ISO (three files, 1.6GB in total)
- MP3 (271 files, 1GB in total)
- Programs (8504 files, 1.4GB in total)
- Windows (9006 files, 1.06GB in total)
Let’s start with NTFS. We’re going to examine the results of each test action for each pattern independently due to the abundance of data. The first action is the creation of a set of files on the array.
We created diagrams for the three most interesting file-sets:
As might have been expected, the RAID0 arrays have the highest results. The RAID5 arrays are rather fast in the Install and ISO patterns, and are very slow in the Programs pattern only. The RAID0 arrays show performance scalability depending on the number of disks per array with every file-set while the RAID5 arrays do that only wit the Install and ISO patterns.
Reading goes next:
Performance scalability of the RAID0 and RAID5 arrays can still be observed. All the arrays are surprisingly very fast with the ISO pattern.